Actumnus is a genus of crabs in the family Pilumnidae. Alongside the 28 extant species, it has a fossil record extending back into the Miocene.
Species
Actumnus contains 28 extant species:
- Actumnus amirantensis <small>Rathbun, 1911</small>
- Actumnus anthelmei <small>Ward, 1942</small>
- Actumnus arbutum <small>Alcock, 1898</small>
- Actumnus asper <small>(Rüppell, 1830)</small>
- Actumnus calypso <small>(Herbst, 1801)</small>
- Actumnus davoensis <small>Ward, 1941</small>
- Actumnus digitalis <small>(Rathbun, 1907)</small>
- Actumnus dorsipes <small>(Stimpson, 1858)</small>
- Actumnus elegans <small>De Man, 1888</small>
- Actumnus fissifrons <small>Alcock, 1898</small>
- Actumnus forficigerus <small>(Stimpson, 1858)</small>
- Actumnus globulus <small>Heller, 1891</small>
- Actumnus granotuberosus <small>Garth & Kim, 1983</small>
- Actumnus griffini <small>Takeda & Webber, 2006</small>
- Actumnus intermedius <small>Balss, 1922</small>
- Actumnus margarodes <small>MacGilchrist, 1905</small>
- Actumnus marissinicus <small>Takeda & Miyake, 1977</small>
- Actumnus miliaris <small>A. Milne-Edwards, 1865</small>
- Actumnus obesus <small>Dana, 1852</small>
- Actumnus parvulus <small>A. Milne-Edwards, 1865</small>
- Actumnus setifer <small>(De Haan, 1835)</small>
- Actumnus setosiareolatus <small>Takeda, 1977</small>
- Actumnus similis <small>Takeda & Miyake, 1969</small>
- Actumnus simplex <small>Rathbun, 1911</small>
- Actumnus squamosus <small>(De Haan, 1835)</small>
- Actumnus taiwanicus <small>Ho, Yu & Ng, 2001</small>
- Actumnus targionii <small>Cano, 1889</small>
- Actumnus tesselatus <small>Alcock, 1898</small>
Two further species are known only from fossils.
References